WW1 Brodie. Unknown markings

[SMP]

I recently acquired this early War Office Pattern Brodie, but do not know what the flashes represent. One side appears to have the letters "W. A. C?" and the other a few numbers beginning with "18...?". Does anyone recognise these flashes ? I suspect they are battle markings, but haven't been able to find any information. Thanks.

[tinlid]

Probably not much help, 1st Dragoon Guards helmets were flashed to both sides, Canadian 2nd Div also had a blue oblong flash.
Nice helmet.

[aef1917]

The big book of battle insignia held by the IWM suggests B Co. 7th Bn. Royal West Kent Regiment (Queen's Own).

[SMP]

Yes, thank you. I believe you may have found it !